EP 0670071 A1 19950906 - EQUIPMENT WHICH INCLUDES ELECTRONICS.
Title (en)
EQUIPMENT WHICH INCLUDES ELECTRONICS.
Title (de)
ANLAGE MIT ELEKTRONIKBAUTEILEN.
Title (fr)
APPAREILS COMPORTANT DES SYSTEMES ELECTRONIQUES.
Publication
Application
Priority
- GB 9301528 W 19930721
- ZA 925482 A 19920721
Abstract (en)
[origin: WO9402913A1] To enable control to be exercised over the use of equipment, a chip is built into the electronic circuitry of the equipment which chip has stored therein a series of pseudorandom numbers. When a crypto unit of the chip receives a first number generated by a controlling computer the pseudorandom number sequence is generated on the basis of an algorithm which is stored in the crypto unit of the chip. The first number is generated when data, including the serial number of the equipment, is entered into the controlling computer. The serial number of the equipment is entered in a read only memory of the chip so that the serial number of the equipment is a permanent and unalterable part of the electronic circuitry. Various uses to which equipment having its serial number entered in a chip thereof are also disclosed.
IPC 1-7
IPC 8 full level
G06F 12/14 (2006.01); G06K 19/00 (2006.01); G07C 9/00 (2006.01); G07F 7/10 (2006.01); G07F 7/12 (2006.01)
CPC (source: EP US)
G06Q 20/341 (2013.01 - EP US); G06Q 20/4093 (2013.01 - EP US); G07C 9/33 (2020.01 - EP US); G07F 7/08 (2013.01 - EP US); G07F 7/1008 (2013.01 - EP US); G07F 7/12 (2013.01 - EP US); G07F 7/125 (2013.01 - EP US)
Citation (search report)
See references of WO 9402913A1
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
WO 9402913 A1 19940203; AU 4714193 A 19940214; CN 1087735 A 19940608; EP 0670071 A1 19950906; IL 106439 A 19970713; JP H08502135 A 19960305; MX PA93004394 A 20050617; US 5495531 A 19960227
DOCDB simple family (application)
GB 9301528 W 19930721; AU 4714193 A 19930721; CN 93116876 A 19930721; EP 93917879 A 19930721; IL 10643993 A 19930721; JP 50428594 A 19930721; MX 9304394 A 19930721; US 40018695 A 19950306